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Travelling Waves of Fast Cryo-chemical Transformations in Solids(Non-Arrhenius Chemistry of the ColdUniverse)
Published online by Cambridge University Press: 13 December 2008
Abstract
Propagation of chemical waves at very low temperatures, observed experimentally [V.V. Barelko et al., Advances in Chem. Phys. 74 (1988), 339-384.] at velocities of order 10 cm/s, is due to a very non- standard physical mechanism. The energy liberated by the chemical reaction induces destruction of the material, thereby facilitating the reaction, a process very different from standard combustion. In this work we present recent experimental results and develop a new mathematical model which takes into account mechanical and chemical processes. We carry out numerical simulations and suggest a simplified model in order to obtain an explicit expression for the wave speed. This modelling allows us to give a possible explanation of the existence of two modes of propagation observed experimentally and of the dependence of the speed of propagation on the radiation dose.
- Type
- Research Article
- Information
- Mathematical Modelling of Natural Phenomena , Volume 3 , Issue 5: Materials Science , 2008 , pp. 50 - 72
- Copyright
- © EDP Sciences, 2008
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